GE Industrial Solutions Entelliguard TU, MicroVersaTrip Plus and PM Conversion Kits - Manual (Page 17)

17
SECTION 6. FOUR-WIRE GROUND
FAULT OPTION
The ground fault option for four-wire installations
requires the installation of an additional current
sensor on the neutral bus in the equipment. The
sensor is connected to the trip unit through the
connector provided in the wiring harness.
1. Mount the neutral sensor on the outgoing neutral
lead, normally in the bus or cable compartment in
the equipment. Figure 19 shows the sensor
outlines for the 600 A and 800 A frame sizes.
Figure 20 shows the sensor outlines for the 1600
A and 2000 A frame sizes.
2. Connect the neutral sensor wire harness to the
correct taps on the sensor. To maintain the same
polarity as the phase sensors, connect the white
wire to the common terminal, black to the tap.
3. Route the wires through the equipment and
connect to the two-pin connector on the trip unit
wiring harness, routed through the rear of the
breaker with the CT wires. The wires should be
tied to the breaker frame in an easily accessible
location.
Figure 19. Neutral sensor outline for 600A and 800A breakers
Figure 20. Neutral sensor outline for 1600A and 2000A breakers